wesson



(No Model.)

J. S'.'LANDERS & D; 3. WESSON.

LOOK FOR FIRE ARMSL No. 323, 73. Patented Au 4, 1885.

UNITED STATES PATENT Fries.

JO 'QS. LANDnas AND DANIEL B. WnSsoN, or SPRINGFIELD, MASSACHU- SETTS, ASSIGNORS TO SMITH a WESSON, or SAME PLACE.

LOCK" Foa FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No.- 323,873, dated August 4, 1885,

Application filed May 18,1885. (No model.)

revolving fire-arms, and pertains to the con-.

structjori of the firihg-pin, the firing-pin bushing, and means for securing the latter in that part of the frame termed the recoil-plate, whereby said bushing is invariably secured in the aim in the same position and with greater case than heretofore, and its outer end .presentsasmjooth surface and one particularly dapted'to the concavity in the recoil-shield,/

and theinterior thereof is adapted to receive 2'; a spring and the firing-pin of improved form; 1n the drawings forming part of this specification, Figured is a side elevation, partly in section, of that portion of arevolving fire-arm directly back of the cylinder, having the up- I per-edge of the side plate broken away and having our improvements applied thereto. Fig.2 is a perspective view of the firing-pin, its-bushing, and the iocking pin for the latter. In the drawings, a is the frame of the arm, having the, hammer c hung and adapted to operate therein in the usual manner. The usual concavity in the face of the recoil-plate is indicated at b. a

. The firing-pin bushing 11 is,of cylindrical t'o'rm,'made preferably of steel and suitably hardened, and it is not, as heretofore made, screw-threaded, to adapt it to be attached to theframe by screwing it 'into the latter, but it is smooth and is adapted to fit into a socket in the frame of corresponding diameter, formed from the/face of the recoil-plate inward. Said bushing has therein a cross-cut groove, 10, adapted to the form-of the pin 6, (shown lying therein in Fig. 2,) and the end of the bushing, which is in a plane with the recoil-plate, has a portion thereof, at a, cut to form substantially a segment of the border of said concavity at b on the recoil-plate. A hole forthe pin eis made transversely through frame "a, just above the bushing socket, which cuts 111130 the latter, so that when the bushing is placed in the socket and pin e is driven in, a portion of the latter lies in'the groove 10 in the bushing and a portion in the pin-hole in the frame, thereby securely. looking the bushing in the frame.

Firing-pin bushings heretofore arranged to be screwed into the frame have a screw-driver slot across their outer end, and said slot causes inconvenience, since it permits the heads of the cartridgesto become more or less marked thereby, and it is difiicult to always screw a bushing in sothat the segmental out n will come to its proper place at the border of the concavity b; but by pinning the bushing in, v as above described, said inconveniences are overcome, and the bushing is very easilyinserted or remo ed from the frame, and invariably takes the same position in the latter. The bushing 11 is perforated longitudinally to receive the firingpin c, and to permit the point of the latter to be driven by the hammer beyond its outer end to strike the cartridgeprimer. Said perforation in the bushing is counterbored to near its front end, to form 7 therein a chamber for the coiled spring 0, and the bushing is further counterbored at its f'rear end to form the shoulder z and enlarge it sufficiently to receive the collar w on the firing-pin,said spring when distended extend- 8o ing against the inner side of said'collar m and drawing the firingpin rearward, so that its point is retired within thc end of the bushing, as shown in Fig. 1.

The bottom of the bushing-socket in frame it constitutes a stop to arrest the firing-pin in its backward movement, and said bottom is perforated to allow the rear end of the firingpin to pass through it within reach of the hammer c, as shown.

The shoulder z in the bushing serves to stop the firing-pin-when the hammer drives it forward, the collar 2' thereon striking said shoulder, and thus insuring a uniform degree of movement of the firing-pin against thc cartridge-rrimer. I

What we claim as our invention is-.--

1. In a revolving fire-arm, the firing-pin bushing 11, having a cross-slot therein, combined with the frame or, having a bushingsocket therein opening on the recoil-plate, and the pin 0, passing transversely into the frame,

and engaging in said slot in the bushing, suhin the bushing, the frame a, thepin e, engag- 1o stantially as set forth. ing with the letter and said bushing", and the 2. In a revolving fire-arm, the firing-pin hammer a, substantially as set forth. bushing perforated to receive the firing-pin a T 5 and having the cross-slot w therein, and a shoulder around its interior near its rear end, i

combined with the firing-pin having the collar a: thereon, the spring 0,1oeated between said collar and the end of the spring-chamber Witnesses:

WM. TH GHAPIN, HENRY KNOX. 

